• 8"w X 4"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 9.875" Width X 6" Height - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE
• Multi-Shutter Damper With Easy Handle Operator Gives You Full Control Over Airflow Direction & Amount of Airflow - Can Also Be Shut Completely
• Full 190 Degrees Control of Air Direction Vertically & Horizontally
• Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment - Screws Included
• Easy Unrestricted Air Flow For Your HVAC System

8"w X 4"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 9.875" Width X 6" Height - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLEMetal-Fab/Air-Craft